At Surety Bonds Agent, we offer a full range of surety bonds nationwide through an extended carrier network. Learn more about fiduciary bonds below, and contact us today to request a quote. If you have additional questions or want to explore bonding solutions for your business, speak with one of our knowledgeable surety bond experts. A fiduciary relationship exists when one person has been granted the authority to manage assets belonging to someone else. For example, the estate of a deceased person or the assets and income of a minor or incapacitated adult. Fiduciary duties are conferred by a probate court, which is why fiduciary bonds are also called probate bonds. In many cases, the fiduciary is a family member or has some other connection to the person whose assets he or she will be managing. However, the fiduciary could also be an accountant, attorney, or some other professional chosen by the court.